There's a merged pull request on the void-packages repository

offlineimap: update to 8.0.0; remove dispensable py2 deps
https://github.com/void-linux/void-packages/pull/38781

Description:
#### Testing the changes
- I tested the changes in this PR: **NO**

#### Local build testing
- I built this PR locally for my native architecture, x86_64

This update migrates the package to python 3. Two of the python 2 dependencies under the old full-deptree don't have any more dependent packages. I removed one of them outright. For the other, which provided a python 3 counterpart as subpackage, removed the python 2 package and converted the python 3 symlinked package to be its own module.

I **DID NOT** do any significant runtime testing on the updated `offlineimap` package expect for installing and running `--version`, `--help` etc.